curl --request PUT \
  --url https://services.leadconnectorhq.com/calendars/groups/{groupId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Version: <version>' \
  --data '
{
  "name": "group a",
  "description": "group description",
  "slug": "15-mins"
}
'

{
  "group": {
    "locationId": "ocQHyuzHvysMo5N5VsXc",
    "name": "group a",
    "description": "group description",
    "slug": "15-mins",
    "isActive": true,
    "id": "ocQHyuzHvysMo5N5VsXc"
  }
}